Methylbutenols
In chemistry, the methylbutenols form a group of structurally isomeric pentenols . The different arrangement results in five constitutional isomers with the empirical formula C 5 H 10 O. The biogenesis of the isoprenoids is based on these isomers.
Methylbutenols | |||||||||||
Surname | 2-methylbut-3-en-2-ol | 3-methylbut-2-en-1-ol | 3-methylbut-3-en-1-ol | (2 Z ) -2-methylbut-2-en-1-ol | (2 E ) -2-methylbut-2-en-1-ol | ||||||
other names | 1,1-dimethylallyl alcohol | Prenol | 3-isopentenyl alcohol, isoprenol | Angelica alcohol | Tiglin alcohol | ||||||
Structural formula | |||||||||||
CAS number | 115-18-4 | 556-82-1 | 763-32-6 | 19319-26-7 | 497-02-9 | ||||||
PubChem | 8257 | 11173 | 12988 | 5366266 | 6433417 | ||||||
Molecular formula | C 5 H 10 O | ||||||||||
Molar mass | 86.13 g mol −1 | ||||||||||
Physical state | liquid | ||||||||||
Brief description | colorless liquid with an alcoholic odor |
colorless liquid with a fruity odor |
colorless liquid with an alcoholic odor |
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Melting point | −43 ° C | -20 ° C | |||||||||
boiling point | 98 ° C | 140 ° C | 129 ° C | 136-137 ° C | 122-127 ° C | ||||||
solubility | 170 g l −1 (20 ° C) | 90 g l −1 (20 ° C) | |||||||||
miscible with water | easily soluble in water | soluble in water | |||||||||
GHS labeling |
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H and P phrases | 225-302-319 | 226-302-315-319-335 | 226-318 | ||||||||
no EUH phrases | no EUH phrases | no EUH phrases | |||||||||
210-223-260 305 + 351 + 338-403 + 235 |
261-305 + 351 + 338 | 210-280-305 + 351 + 338-313 |
Individual evidence
- ↑ Entry on Methylbutenole. In: Römpp Online . Georg Thieme Verlag, accessed on July 5, 2014.
- ↑ a b c d e Entry for CAS no. 115-18-4 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
- ↑ a b c d e Entry for CAS no. 556-82-1 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
- ↑ a b c d e f Entry for CAS no. 763-32-6 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
- ↑ Dictionary of Food Compounds , p. 880 ( limited preview in Google book search).
- ↑ Dictionary of Food Compounds , p. 880 ( limited preview in Google book search).